intrarefresh.h File Reference

Pseudo-Raqndom Intra macroblock refresh support. More...

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Functions
void	RandomIntraInit (ImageParameters *p_Img, int xsize, int ysize, int refresh)
void	RandomIntraUninit (ImageParameters *p_Img)
int	RandomIntra (ImageParameters *p_Img, int mb)
void	RandomIntraNewPicture (ImageParameters *p_Img)

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Detailed Description

Pseudo-Raqndom Intra macroblock refresh support.

Date:

16 June 2002

Author:

Stephan Wenger stewe@cs.tu-berlin.de

Definition in file intrarefresh.h.

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Function Documentation

int RandomIntra	(	ImageParameters *	p_Img,
		int	mb
	)

RandomIntra: Code an MB as Intra?

Input

MacroblockNumberInScanOrder

Output

1 if an MB should be forced to Intra, according the the RefreshPattern 0 otherwise

Definition at line 87 of file intrarefresh.c.

Referenced by encode_one_macroblock_high(), encode_one_macroblock_highfast(), encode_one_macroblock_highloss(), and encode_one_macroblock_low().

void RandomIntraInit	(	ImageParameters *	p_Img,
		int	xsize,
		int	ysize,
		int	refresh
	)

RandomIntraInit: Initializes Random Intra module. Should be called only after initialization (or changes) of the picture size or the random intra refresh value. In version jm2.1 it is impossible to change those values on-the-fly, hence RandomIntraInit should be called immediately after the parsing of the config file.

Input:

xsize, ysize: size of the picture (in MBs) refresh : refresh rate in MBs per picture

Definition at line 34 of file intrarefresh.c.

References no_mem_exit().

Referenced by init_img().

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void RandomIntraNewPicture

(

ImageParameters *

p_Img

)

returns 1 for MBs that need forced Intra

returns 1 for MBs that need forced Intra

This function should be called exactly once per picture, and requires a finished initialization

Definition at line 109 of file intrarefresh.c.

Referenced by code_a_picture().